![Human saliva is six times stronger than morphine](https://hight3ch.com/wp-content/uploads/2016/12/human-saliva-is-six-times-strong.jpg)
Researchers have discovered a natural painkiller that’s six times more powerful than morphine, and it’s produced by human saliva. It’s called opiorphin — here’s what you need to know.
Researchers have discovered a natural painkiller that’s six times more powerful than morphine, and it’s produced by human saliva. It’s called opiorphin — here’s what you need to know.